Charging rack for miners&#39; lamps



April 14, 1931. I G WHEAT 1,800,918

CHARGINGRA CK FOR MINERS LAMPS Filed Feb. 2. 1929 2 Sheets-Sheet l 14, 1931. WHEAT 1,800,918

CHARGING RACK FOR MINERS LAMPS 7 Filed Feb. 2, 1929 I 2 Sheets-Sheet 2 1 FYI-g3 Q Thieinvehtionrelate more esp batteries of such lar'nps.

Itli-s the usuel mem rbium rniner' e5 item morning." The present invention; aims to facilitate the handling "fo f the 1 in the lamp, house arid theeha frgihg of the batteries.

In a pending appliczitiori SeriiIINoQBMQ-EI 526, filediJahuary 2351929 (since matured bgmrig Dumps ofthis character;

"The atureofthe jinvelt orrjv llbe Te y;

understood from: the" following (les er pjtlou l f phiiYing drawings, and thenovel features will la ms- Q Figure is epjerspec tii'e yi showlngz a be particul out the appended" t the. l

pertfofanapparatus}constructed iri eecorcla iCe withthis iuventionggm M it the perts is hown gpperatus showIr in Figs. 1 and 2; V

"Aimiuer s lamp usually eonslsts of a head -piece' intended to be worn on the cap or some cohVeuieht-pertofthe personfa 'storage bat-f te ryfwhi'ch ustiallyiiisi'slung fromthe belt, :indef'cordfor eounecting the lamp with the; battery endhaying electrieal conductors for supplyiug eur'rent j the battery to the; lam or lemps mountedf in the head piece;

a vertieajil settiorlal View of the vew w i t ime Beferriugfirst to FigeQl, 3 and 4,lit will be observed that the :miners lampfor Whieh; the apperatus is designed more especially,

although not exclusively, comprises 2t head 1 plece 2', a battery 3, a-nd a cor-d4 connecting the head piece with the battery. The head piecewhesprigiclly tseeuredsto it a clip-:5 by means ofwhieh it maybe fastened-to a braoket or reletiyely"rigiclstrip of material" e1modifiedjfco stretion, em oa ingflm invention; t

equipped. with a; sw itchf controlled or open ated by a knob 6, Fig. 4, by meansof which either bulb may" be lighted, as desired; In th s apparatus thechargingterminals 7 7,' f Flgi, ere mounted on thene l: 8 ofthe head piece, and in the preferred arrangement one of these terminelsjs always connected with one offtheoonductors inithecord 4s, While the are mounted in theYheadpiece, twousually; bemgproVIclecl encl the heed piece also is plylnecessary to turn the Switch knob 6 to;

constructioir and operation ot the specific lamp organization shown in the drawings;

reference should be made to mypatent above deeignzttedr 1 t Theme]: shown in the drawings includes speetively, and one eimore horizontal the proper-point end then to apply the con-, "tzicts ot" a jcharglng circuit to j the terminals [7 7. Foralhore'detailed description of the g5} i shelves for supporting a se'ries of head pi e'ces fibre, bakelite, or similar material, the 'lower m mber eXtenclihg forward considerably be 1 yor dtheuppermemberl These-members 13 H anchll are slottedaLt interve lsges shown at w arid, 16;1espeeti e1y, to provide recesses 'ifor receivingwthe respective head pieces 2. r

The upper unemberf is seeured to theback y we 7 w i egthelo t membe i in po'si tiorlffor the charging operation; In the" illustrated construction, each of these rent each chargln through itsrespectivelamp' 34. th'e'switch contacts 371 and same held in a an measles-L is @turn'edinto the position shown ,in rig. 3 to close the chargingsvtitch 251-28; allof the switches 37+-38 twill he opened. hele sw t h et ere er ;we pen daa i; insaid rackforengagementfwiththe charg proximately simnltaneoaslv w th: closing ofthe eharging cirfcuit; pp I It" is contemplat d; that Whenf the miners leavetheirlampsatfthelainphonse early in 1 the day, the attendahtjitill placetliem inthe chajrgingracks in theposition ishovvn after first turning the switch 6. "of each had piece 1 into charging positions and thusfeXtingL ish-K l ing the la'mphnlbsinf the headpiece; At this a time the s'tvitches 37%38 are a all closed: and

" conseqlientlyfthe fhatteries Will "discharge, thwugh he amp 3 i th di 2 e f this :timebeingtopen. Whensubstantially all 1 of the lampshavebeenbroughtinand it is;

desired to begin -tolcharge the thatteriesl-the attendant tilrns thekhob 27 to close the charg ing circuit through the switch +28, thus opening sninultaneouslycall oithe switches 311-38; All 015 the lamps thus are givensub tantially the samecdischarge and receive lap- "proximately ithe same chargelj iwhen the charging operation has been completed the] attendant can open. the charging circuit through the switch 25j-28 While still hold- 5.11;; the switches 37+38jopen, if he so de' sired., i i This discharging arrangement canbe omit-- techif desired, and Fig. hshows a rack which is hot equipped with this part, of the appa- =ratus.- I

Theinvention provides asimple construcjwhich thoroughly satisfies While I have herein shovvn and described preferred embodiments ofrny invention, it will be understoodthat the ihventionmay he emhodiedin other formswithoiit departing from the spirit or scope thereof;

Another form of lamp which can i charged in the rack disclosed in this applica tion is shown inlrny" application Ser al No. $5,199, filed December 16, 1 926, ands1nce s position a hermally" gagement With-each other by the resiliency of the strips 3fi; Theconta ct37yhowever," may be moved away from its fcooperating h a cohtactSS. by rocking a-Qshaft 410fw0od or' other-1 insulating material which is provided c ,withoneflattenedor ciit a ay side, as shown 10 in Fig) 3; This rockshaftis supportedhori- -1 zontally in a slot in thebajck boardand the V switch knob 27" is secni'ed fast on-the end of it. Itv'vill beclear' froni flanp inspection of Fig? a that if "the-flattened side of themck shaft 41 lies substantiallyflhshwith the front! face ofthe hack; hoard10all the switches 1930. I-Thispatent also discloses simple forms i of changing apparatus, but such apparatus is not claimed insaid pateht, the claims being L V p limited'to the lamp construction,

: Having thus described my inventiohi'what I desiretoclaim as new is: l

1. ;'In a charging; rack for miners lamps; havlng charg ng termlnals ont i-e head piece, i r

t a a t the combination of a series of pairs of contacts, means for connectingsaid contacts in a charg ng C11CL11t,a1'l(l means for supporting a series ofsaidheadpieces in the rack with the charging terminals of each headpiece. operatively tengagediwith a pair of said con qtacts. 1. r 5111 In acharging rack for mihers lamps "1havingcharging terminals on thehead piece, a 5 i the combination of shelf for supporting. a

series of said headupieces, contacts mounted 39L e i 1mg terminals'of the respective-head pieces? said terniinals are connected.

having charging terminals-ion the head piece, the combinat on of a series of resillently mounted contacts arranged in pairs With the contacts of'each pair positioned to engage the chargmg term nals on one said head pices,

so supported,and a charging; circuit inwhich means for supporting said head pieces in j operative relationship; respectivelyp to said contacts, and a charglng circuit in which said contacts are connected.

the conibination of aseries ofspringcontacts arranged. in pairs, each pair beingadapted t0? grip the part of the head piece provided with charging terminals and to make Contact;

respectively, with said terminalsa charging,

circuit in which said terminalsareconnected;

and means-for supporting a series of head pieces inoperative relationship tosaidfcom tactsf. 1

therespective headpieces supported on the shelf, and fa charging circuit in said contacts are co cte a I -harg1nrack Lieu for miners lamps having charging terminalson the vheadfpiece;

the "shelf, said contacts being constructed to engage eachother automaticallylwhen ahead 5 In acharging "rack forlgminers lainpsl having chargingterminals on the headpiece, the combination of a shelf for supportinga series of said head pieces, said-shelf having recesses Jtoreceivethe respective head pieces, Ycontactsassociated withsaid recessesand p0; sitionedto engage the charging terminals on i tion of chargingrack which is economical to; manufacture, very convenientto' use, and i the practical re-v hquirements for ap-paratus'of this character.

pieceiswithdraWii-irom between theni, and; a charging'circnrt 1n WhlCll saldcontacts are j l a acharging rack; for miners,lamps havin :chargmg terminals on the headpiece;

connected; 1

the combination of, a shelf for supporting a series of said head.1pieces,-'saidshelf having" recesses-to re'ceitethe respective head pieces,

l a pair-10f spring contacts alined With each of 51' said recesses and" positioned to" engage, re-

spectively, With the charging terminals on a head? piece" supported in said 9 shelf; and

charginglcircuit in which said, contacts are i In a; charging rack-for miners" lamps hav ng charg ng terminals on 'the headpiece,

thezcon bination of acshelfhaving aseries of slots?thereinto receiye, respectively the neck;

portions; of ;sa;id "head{ pieces; and contacts mounted in the frackand associated with. said SlOllS'fO engage the charging termlnals on the head Tpiecessupportedin saidslotsf] l 9.; In a charging ack fora minersl amps ,havingchargingterminals on the'head piece,

grip a vportionoifthejhead "piece 'positioned 'connect-ions betwceneach oif said devices and "therein,

n; a a charging rack-for miners? l-lanips having charging terminals on the head piece; the combination of a' shelf for supporting a seriesjo fsaidhead pieces, said shelf incliiding a main; portion havinggslots therein to re? ceiyethe necks oif the head piecesfand another part positionedonarlower level to siipport the main bodyportionsof therespecti-Ve head pieces,iavpa;ir ofspring contacts located irninsanely below saidis helf -and' alined with" 12; In acharging-rack foninin'ersf lamps i.

thecombination oit' a series ofcharging eon-V;

tacts arranged in pairs, and each painbei'n g:

positioned to engage the eharginggterininals on a m nersl-arnp, meansyfor supporting. said 5 lamps'ln operatlve-1fe1at1onsh1p :to sa d re-j 7 spective' pairs of contacts, a 5 charging circuit,

. in which saidcontactsare connected a series x of lampsinounted on said.racka-ndlconnected.- in parallel 'With the respectiiie pairs of char-g ing' contacts, a switch: for each" 'lanip' 'con-l trolling the, electrical; connection hetween its respective lamp andthe pair" 011;charging terminals With v'vhich it conne 'l i: i 7 single actuating device for operating 'alliof said switches si'niult-aneonsly,I

1 '13. 'In a charging rack forn iners lalnio's ,f the; combination of a series of. charging con f tacts arranged in pairs and each pair being, positioned to engage the charging terminals on; a r iners lanip, means forisupporting-said lamps (inoperative relationship ft'oi said: re}

spective pairs of contacts; a chargingt cireuit in which said contacts are: connected, series] of lamps moilnted on said'rack and connectedfj in parallel} with the respectiize pairs of charging i contacts a swit h for each p-W I controlling the. electricalconnectionbetween L its respectivelamp and the pair. of charging:

terniin'als With which itj is connected, f chafg" ln'gswltch ID SEIlCl c1rcu1t,*and means for ope atingfallzofsaid switchessimultaneously,said

means beingconstructed andr neangedjm i isfclosed; a h w h each slot in position to grip a portion of a:

head. piece" locatedtherein,1:and means im- 1 mediatfely below said contacts for supporting; them againsta downward thrust-but permit-i V tingthe'contacts of each :pai1 tospring toward 50 .l l ll nfa-charging rack V miners lanips,f V the .combinat onof a1 seriesof chargingcon tactsarranged -inpa1rs,yand each: pa r being. positioned: to; engage the charg ng terminals andlfron each otherr on a miners lampymeans forsupporting said lamps inoperative relationship *to; said fr espectivei pairs of contacts," a charging vc'i :cnit in which: said contacts areconnected; ci'irrent consuming; deyices on: said rack connected; I iiespectively, anparallel W1thwtl16"pa11S. OfL I changing contacts; a switch controlling. the

its respective; pair of chargingwcontacts, and

m'eans for operating all ofsaid -switches si wcan's esaidilainp circuit controlling switches to. remain open whllesaid charging swi-tch r soff 

